High Quality Content by WIKIPEDIA articles! A perpetuity is an annuity that has no end, or a stream of cash payments that continues forever. There are few actual perpetuities in existence (the United Kingdom (UK) government has issued them in the past; these are known and still trade as consols). A number of types of investments are effectively perpetuities, such as real estate and preferred stock, and techniques for valuing a perpetuity can be applied to establish price. Perpetuities are but one of the time value of money methods for valuing financial assets. Perpetuities are a form of ordinary annuities.